package com.harleyquinn.gulimall.search.thread;

import java.util.concurrent.*;

/**
 * @Description:
 * @Created: harleyquinn
 * @author: 哈莉·奎茵
 * @createTime: 2020-06-18 11:16
 **/
public class ThreadTest {

    public static ExecutorService executor = Executors.newFixedThreadPool(10);

    public static void main(String[] args) throws ExecutionException, InterruptedException {
        // System.out.println("main......start.....");
        // Thread thread = new Thread01();
        // thread.start();
        // System.out.println("main......end.....");

        // Runable01 runable01 = new Runable01();
        // new Thread(runable01).start();

         FutureTask<Integer> futureTask = new FutureTask<>(new Callable01());
         new Thread(futureTask).start();
         //阻塞等待整个线程执行完成，获取返回结果
         System.out.println(futureTask.get());

        // service.execute(new Runable01());
        // Future<Integer> submit = service.submit(new Callable01());
        // submit.get();

//        System.out.println("main......start.....");
//         CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {
//             System.out.println("当前线程：" + Thread.currentThread().getId());
//             int i = 10 / 2;
//             System.out.println("运行结果：" + i);
//         }, executor);

        /**
         * 方法完成后的处理
         */
         CompletableFuture<Integer> future = CompletableFuture.supplyAsync(() -> {
             System.out.println("当前线程：" + Thread.currentThread().getId());
             int i = 10 / 0;
             System.out.println("运行结果：" + i);
             return i;
         }, executor).whenComplete((res,exception) -> {  //res处理成功的结果，即 i ,exception 异常结果
             //虽然能得到异常信息，但是没法修改返回数据
             System.out.println("异步任务成功完成了...结果是：" + res + "异常是：" + exception);
         }).exceptionally(throwable -> {   //异常处理
             //可以感知异常，同时返回默认值
             return 10;
         });

        /**
         * 方法执行完后端处理
         */
//         CompletableFuture<Integer> futurer = CompletableFuture.supplyAsync(() -> {
//             int i = 10 / 2;
//             return i;
//         }, executor).handle((result,exception) -> {
//             if (result != null) {
//                 return result * 2;
//             }
//             if (exception != null) {  //有异常
//                 System.out.println("异步任务成功完成了...结果是：" + result + "异常是：" + exception);
//                 return 0;
//             }
//             return 0;
//         });


        /**
         * 线程串行化
         * 1、thenRun：不能获取上一步的执行结果
         * 2、thenAcceptAsync：能接受上一步结果，但是无返回值
         * 3、thenApplyAsync：能接受上一步结果，有返回值
         *
         */
        CompletableFuture<String> futurer = CompletableFuture.supplyAsync(() -> {
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
            return i;
        }, executor).thenApplyAsync(res -> {
            System.out.println("任务2启动了..." + res);
            return "Hello" + res;
        }, executor);
        System.out.println("main......end....." + futurer.get());
     }

//    private static void threadPool() {
//
//        ExecutorService threadPool = new ThreadPoolExecutor(
//                5,
//                200,
//                10,
//                TimeUnit.SECONDS,
//                new LinkedBlockingDeque<Runnable>(10000),
//                Executors.defaultThreadFactory(),
//                new ThreadPoolExecutor.AbortPolicy()
//        );
//
//        //定时任务的线程池
//
//
//        ExecutorService service = Executors.newScheduledThreadPool(2);
//        service.submit(new Thread01());
//        service.execute(new Thread01());
//    }


    public static class Thread01 extends Thread {
        @Override
        public void run() {
            System.out.println("当前线程：" + Thread.currentThread().getId());
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
        }
    }


    public static class Runable01 implements Runnable {
        @Override
        public void run() {
            System.out.println("当前线程：" + Thread.currentThread().getId());
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
        }
    }


    public static class Callable01 implements Callable<Integer> {
        @Override
        public Integer call() throws Exception {
            System.out.println("当前线程：" + Thread.currentThread().getId());
            int i = 10 / 2;
            System.out.println("运行结果：" + i);
            return i;
        }
    }

}
